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지능형 분전반을 이용한 저압전기설비 재해예방시스템 구축
임용배(Young-Bea Lim),전정채(Jeong-Chay Jeon),박찬엄(Chan-Eom Park),배석명(Seok-Myeong Bae) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
국내에서는 전기에 의한 재해를 예방하기 위해, 보통 3년 주기의 정기점검이나 정기검사를 통해 설비의 안전상태를 확인하고 있다. 그러나 전기설비는 확인 당시의 상황으로 항상 상태가 유지되는 것이 아니고, 사고의 징후 또한 비가시적이며, 열화에 의해 발생되는 현상을 검출하기가 용이하지 않기 때문에 전기재해를 예방하는데 한계가 있었다. 따라서 본 연구에서는 일시적인 예방활동을 보완하기 위해, 전기재해의 주요 요인에 대하여 상시감시가 가능한 지능형 분전반을 개발하고, 이를 통해 전기재해를 예방하고자 한다.
임용배(Young-Bea Lim),전정채(Jeong-Chay Jeon),박찬엄(Chan-Eom Park),배석명(Seok-Myeong Bae) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
According to statistics from the Korea Electric Safety Corporation for the year 2009, 9,391 fires are attributed to electrical faults. These fires result in 43 deaths and 283 injuries. The fires cost ₩ 58 billion in property damage. Multiple people using places are being managed to prevent disasters by the special law for safety supervising of multiple people using spots. The KESCO is managing safety in the places through intensified inspection. Especially, entertainment spots, such as entertainment bars and karaoke bars, are different from other multiple people using places, and active reaction to prevent electrical fires is impossible. Therefore, special protection plans to prevent electrical disasters are needed.
환경영향 요소를 고려한 특고압 전기설비의 안전등급 평가시스템
김동우,임용배,이기연,문현욱,Kim, Dong-Woo,Lim, Young-Bea,Lee, Ki-Yeon,Moon, Hyun-Wook 대한전기학회 2017 전기학회논문지 Vol.66 No.1
This paper presents an assessment system of safety level of 22.9kV grade high voltage electrical facilities considering environmental factors. The assessment system was developed based on the following procedure. Firstly, assessment structure was determined by consulting standards regarding inspection and diagnosis of electrical facilities. Secondly, contents of items and sub items of assessment system were developed. Thirdly, in order to quantify the importance of the assessment system, the weight was calculated using Analytic Hierarchy Process(AHP). Lastly, assessment table of safety level was developed including environmental factors such as period of use and load factor. The developed system can evaluate the safety level of high voltage facilities in an objective way. Therefore it can be applicable to electrical safety management system based on Internet of Things(IoT).
김동우(Dong-Woo Kim),임용배(Young-Bea Lim),이상익(Sang-Ick Lee),김재현(Jae-Hyun Kim),강대철(Dae-Chul Kang) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.6
Electrical leakage happens when faults in electrical apparatus or power lines occur. It causes electrical fires and electric shocks. In order to reduce accidents caused by electrical leakage current, it is important to detect faults effectively and shut off the power. In this paper, firstly we analyzed statistics of electrical fires and electric shocks caused by electrical leakage current. Secondly, standards of allowable leakage current and body impedance models were analyzed. Lastly, effective application methods for breaking electrical leakage current were suggested. The results will provide useful preventive measures of electrical fires and electric shocks caused by electrical leakage.
문현욱(Hyun-Wook Moon),임용배(Young-Bea Lim),김동우(Dong-Woo Kim),이상익(Sang-Ick Lee),최명일(Myeong-Il Choi) 대한전기학회 2016 전기학회논문지 Vol.65 No.1
Electrical disasters have not been greatly reduced despite continuous prevention efforts until now. However, the smart distribution board which can be measured information about general electrical condition such as current, voltage, power, power factor etc. and electrical safety condition such as over-current, leakage current, arc etc. and communicated analysis information about electrical condition with server will be helpful for the prevention of electrical disasters through real-time surveillance and data analysis under smart grids based on the two-way communication. In this paper, the proposal standard of smart distribution board for electrical safety is suggested about the structure, functional requirements of compositions, communication, security and so on.
인체 통전전류 위상 분석을 통한 저항성 누설전류 감시의 유효성 분석
김재현(Jae-Hyun Kim),임용배(Young-Bea Lim),이상익(Sang-Ick Lee),김동우(Dong-Woo Kim) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.9
To analyze the effectiveness of the resistive leakage current monitoring as a technology preventing electrical accidents, in this paper, we have estimated the phase of the body impedance by using the body impedance model and the body impedance data from IEC. We also have analyzed the phase of the electric body current in the case of 60㎐/220V. From these results, we concluded that deliberate researches about the phase of the electrical body current and related regulations must be carried out before the resistive leakage current monitoring unit is used to protect electric shock. And we concluded that the resistive leakage current monitoring unit can be utilized to prevent electrical fires caused by electric leakage current without unwanted circuit break due to capacitve leakage current flowing from line filter capacitors to the earth.
저압직류 접지시스템의 지락경로 흐름 분석에 따른 감전 보호기법
김동우(Dong-Woo Kim),임용배(Young-Bea Lim),이상익(Sang-Ick Lee),최명일(Myeong-Il Choi),문현욱(Hyun-Wook Moon) 대한전기학회 2016 전기학회논문지 Vol.65 No.1
This paper presents protection techniques against electric shock in low voltage DC(direct current) grounding systems depending on the analysis of earth fault current paths. Firstly, the comparison between alternating current and direct current on human was conducted, and current threshold values for each current path and for long duration were analyzed. Secondly, the analyses of the earth fault current flows were performed depending on the grounding types and earth fault conditions. Lastly, based on these analyses, adequate protection measures of electric shock depending on low voltage DC grounding types were provided.
환경영향 요소를 고려한 특고압 전기설비의 안전등급 평가시스템
김동우(Dong-Woo Kim),임용배(Young-Bea Lim),이기연(Ki-Yeon Lee),문현욱(Hyun-Wook Moon) 대한전기학회 2017 전기학회논문지 Vol.66 No.2
This paper presents an assessment system of safety level of 22.9kV grade high voltage electrical facilities considering environmental factors. The assessment system was developed based on the following procedure. Firstly, assessment structure was determined by consulting standards regarding inspection and diagnosis of electrical facilities. Secondly, contents of items and sub items of assessment system were developed. Thirdly, in order to quantify the importance of the assessment system, the weight was calculated using Analytic Hierarchy Process(AHP). Lastly, assessment table of safety level was developed including environmental factors such as period of use and load factor. The developed system can evaluate the safety level of high voltage facilities in an objective way. Therefore it can be applicable to electrical safety management system based on Internet of Things(IoT).
접지시스템의 접촉전압 및 보폭전압 측정오차 감소 기법에 관한 연구
김동우(Dong-Woo Kim),임용배(Young-Bea Lim),이상익(Sang-Ick Lee),최명일(Myeong-Il Choi),문현욱(Hyun-Wook Moon) 대한전기학회 2015 전기학회논문지 Vol.64 No.1
This paper presents measurement error reduction technique of touch and step voltage of grounding system based on numerical analysis. When measuring touch and step voltage of grounding system, auxiliary current probes should be located at suitable places. However, the auxiliary probes can not be located at suitable places in such cases as there are buildings and pavements. Therefore, in this paper, we provided measurement error reduction technique of touch and step voltage of grounding system according to the positions of auxiliary probes and angle between auxiliary probes. Also, measurement error analyses of touch and step voltage of grounding system have been conducted using more than one current probe. Based on these analyses, recommended positions of auxiliary probes within allowable measurement errors were presented.